Cleaning of EWIS Installed in the Underfloor Bay of Forward Cargo Compartment (Only If Contaminated)(EWIS)

TASK 24-92-00-100-024-A
Cleaning of EWIS Installed in the Underfloor Bay of Forward Cargo Compartment (Only If Contaminated)(EWIS)

ZONE: 133
ZONE: 134

1. Reason for the Job
Refer to the MPD TASK: 200133-01
CLEANING OF EWIS INSTALLED IN THE UNDERFLOOR BAY OF FORWARD CARGO COMPARTMENT (ONLY IF CONTAMINATED) (EWIS)

NOTE: This is an EWIS (Electrical Wiring Interconnection System) procedure. EWIS is defined in ESPM 20-33-11.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
133	BAY UNDER FWD CAR COMPT FLOOR
134	BAY UNDER FWD CAR COMPT FLOOR
133AL, 134AR, 825

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-003-A	Open the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 52-30-00-860-004-A	Close the FWD or Aft Cargo-Compartment Door with the Hand Pump
TASK 53-22-14-000-001-A	Removal of the Forward Cargo-Compartment Floor-Panels
TASK 53-22-14-400-001-A	Installation of the Forward Cargo-Compartment Floor-Panels
TASK 53-22-14-400-001-A-01	Installation of the Forward Cargo-Compartment Floor-Panels (Alternative Installation Procedure with the Skyflex Option)
ESPM 2055000
Forward Cargo Compartment - Cleaning Area - Zones 133-134 ** ON A/C NOT FOR ALL
Forward Cargo Compartment - Cleaning Area - Zones 133-134 ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 24-92-00-010-131-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001) and (Ref. AMM TASK 52-30-00-860-003).
(3) Open the access doors 133AL and 134AR.
(4) Remove the FWD cargo-compartment floor-panels from FR24 to FR34 (Ref. AMM TASK 53-22-14-000-001).

Subtask 24-92-00-010-131-B ** ON A/C NOT FOR ALL

A. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position.
(2) Open the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-001) and (Ref. AMM TASK 52-30-00-860-003).
(3) Open the access doors 133AL and 134AR.
(4) Remove the FWD cargo-compartment floor-panels from FR24 to FR35.7 (if installed) (Ref. AMM TASK 53-22-14-000-001).

Subtask 24-92-00-862-119-A

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

4. Procedure
Subtask 24-92-00-160-072-A

A. Cleaning of All Wiring Installed in the Underfloor Bay of Forward Cargo Compartment (Only Contaminated Wiring)
(1) Clean the wiring if there is dust, lint or hydraulic contamination ESPM 2055000.
(a) On the flight control routes: 8S and 8M.
(b) On the engine control route: 2S.
(c) On the other routes: 1M and 2M.
(d) On the coaxial wiring route: 5U.

5. Close-up
Subtask 24-92-00-410-129-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the FWD cargo-compartment floor-panels from FR24 to FR34 (Ref. AMM TASK 53-22-14-400-001).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002) and (Ref. AMM TASK 52-30-00-860-004).
(4) Close the access doors 133AL and 134AR.
(5) Remove the access platform(s).

Subtask 24-92-00-410-129-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the FWD cargo-compartment floor-panels from FR24 to FR35.7 (Ref. AMM TASK 53-22-14-400-001).
(3) Close the FWD cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002) and (Ref. AMM TASK 52-30-00-860-004).
(4) Close the access doors 133AL and 134AR.
(5) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:27:22 UTC